Anchors Direct 8.8 Electro Galv Stud M20X280 With Nut And Washer Product Description
8.8 is ISO 898 1 grading for Bolts and screws. It indicates a bolt/screw with a tensile strength of minimum 800MPa and a yield strength of 80% of 800MPa 640MPa. Depending on thickness these are either quenched and tempered or can also be used without Q T provided they meet the hardness and tensile requirements.
